From f5de42001df2e61233c7ec7bbbd014bbaeaee242 Mon Sep 17 00:00:00 2001 From: erifan01 Date: Fri, 26 Jan 2018 10:18:50 +0000 Subject: cmd/asm: add arm64 instructions for math optimization Add arm64 HW instructions FMADDD, FMADDS, FMSUBD, FMSUBS, FNMADDD, FNMADDS, FNMSUBD, FNMSUBS, VFMLA, VFMLS, VMOV (element) for math optimization. Add check on register element index and test cases. Change-Id: Ice07c50b1a02d488ad2cde2a4e8aea93f3e3afff Reviewed-on: https://go-review.googlesource.com/90876 Reviewed-by: Cherry Zhang --- src/cmd/asm/internal/arch/arm64.go | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'src/cmd/asm/internal/arch') diff --git a/src/cmd/asm/internal/arch/arm64.go b/src/cmd/asm/internal/arch/arm64.go index 524a503472..10458b01a0 100644 --- a/src/cmd/asm/internal/arch/arm64.go +++ b/src/cmd/asm/internal/arch/arm64.go @@ -178,18 +178,39 @@ func ARM64RegisterExtension(a *obj.Addr, ext string, reg, num int16, isAmount, i a.Reg = arm64.REG_SXTX + (reg & 31) + int16(num<<5) a.Offset = int64(((rm & 31) << 16) | (7 << 13) | (uint32(num) << 10)) case "B8": + if isIndex { + return errors.New("invalid register extension") + } a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_8B & 15) << 5) case "B16": + if isIndex { + return errors.New("invalid register extension") + } a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_16B & 15) << 5) case "H4": + if isIndex { + return errors.New("invalid register extension") + } a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_4H & 15) << 5) case "H8": + if isIndex { + return errors.New("invalid register extension") + } a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_8H & 15) << 5) case "S2": + if isIndex { + return errors.New("invalid register extension") + } a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_2S & 15) << 5) case "S4": + if isIndex { + return errors.New("invalid register extension") + } a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_4S & 15) << 5) case "D2": + if isIndex { + return errors.New("invalid register extension") + } a.Reg = arm64.REG_ARNG + (reg & 31) + ((arm64.ARNG_2D & 15) << 5) case "B": if !isIndex { -- cgit v1.3